(-7 - 10y + 6y2) + (4 + 3y)

Mathematics

1 answer:

Naddik [55]3 years ago

8 0

Answer:

6y^2-7y-3

Step-by-step explanation:

(-7-10y+6y^2)+(4+3y)

-7-10y+6y^2+4+3y (Plus before brackets means the numbers stays the same)

6y^2+3y-10y+4-7 (Arrange them)

6y^2-7y-3 (Do the maths)

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The volume of the Atlantic Ocean is about 3.1⋅10173.1 \cdot 10^{17}3.1⋅10173, point, 1, dot, 10, start superscript, 17, end supe

Serga [27]

Answer: The annual flow of the Mississippi river would fit in the Atlantic ocean $4.92\times10^5$ times.

Step-by-step explanation:

Given: Volume of Atlantic Ocean= $3.1\times10^{17}$ cubic meters

Annual flow of Mississippi river = $6.3\times10^{11}$ cubic meters.

then, the number of times the annual flow of the Mississippi river would fit in the Atlantic ocean = $\dfrac{\text{ Volume of Atlantic Ocean}}{\text{Annual flow of Mississippi river}}$

$=\dfrac{3.1\times10^{17}}{6.3\times10^{11}}\ \ \=0.492063492063\times10^{17-11}\ \ [\dfrac{a^m}{a^n}=a^{m-n}]\\\\=0.492063492063\times10^6\approx4.92\times10^5$